NA49 series entity bushed needle bearing

Entity Bushed needle roller bearing is assembled with chrome steel outer ring, inner ring, cage and needle roller. This kind of bearing is the most widely in using. Mainly used in automobile, textile machine, printing machine, etc。

Main characteristic

►Low height of cross section, large capacity

►Compact and different structure

►Flexible fit

►Big range of size

 

Ring Cage Roller
Material GCr15 chrome steel SPCC or 20# Steel GCr15 chrome steel
Process Lathing  Grinding Lathing Grinding
Heat treatment Quenching Carburization Black Quenching HRC60-64

 

Metric Inch Structure instruction
NK RNA NKS TAF BR NCS HJ MR Common structure without inner ring
NKI NA NKIS TAFI BRI MRI Common structure with inner ring
NAV Full complement with inner ring
RNAV Full complement without inner ring
NAO No flange with inner ring
RNAO No flange without inner ring
NA 2RS NA.RS With inner ring double seal single seal
RNA.2RS RNA.RS HJT HJTT Without inner ring double seal single seal
IR LR MI LRB LRBZ PI Inner ring
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Description

Image and structure of NA49 series entity bushed needle bearing

Detail dimension of NA49 series entity bushed needle bearing

Shaft model Mass Dimensions
mm g ID OD B
NA49
10 NA 4900 23 10 22 13
12 NA 4901 26 12 24 13
15 NA 4902 34 15 28 13
17 NA 4903 37 17 30 13
20 NA 4904 75.2 20 37 17
22 NA 49/22 80 22 39 17
25 NA 4905 88 25 42 17
28 NA 49/28 97.7 28 45 17
30 NA 4906 101 30 47 17
32 NA 49/32 158 32 52 20
35 NA 4907 170 35 55 20
40 NA 4908 230 40 62 22
45 NA 4909 271 45 68 22
50 NA 4910 274 50 72 22
55 NA 4911 393 55 80 25
60 NA 4912 426 60 85 25
65 NA 4913 456 65 90 25
70 NA 4914 728 70 100 30
75 NA 4915 775 75 105 30
80 NA 4916 878 80 110 30
85 NA 4917 1250 85 120 35
90 NA 4918 1312 90 125 35
95 NA 4919 1371 95 130 35
100 NA 4920 1900 100 140 40
110 NA 4922 2070 110 150 40
120 NA 4924 2860 120 165 45
130 NA 4926 3014 130 180 50
140 NA 4928 2860 140 190 50

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